JPH0480155A - Manufacture of sheet feed roller - Google Patents
Manufacture of sheet feed rollerInfo
- Publication number
- JPH0480155A JPH0480155A JP2192232A JP19223290A JPH0480155A JP H0480155 A JPH0480155 A JP H0480155A JP 2192232 A JP2192232 A JP 2192232A JP 19223290 A JP19223290 A JP 19223290A JP H0480155 A JPH0480155 A JP H0480155A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- heat
- rubber layer
- feed roller
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、プリンター、コピー機等の事務用機器の紙送
り装置に使用される紙送りローラーの製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a paper feed roller used in a paper feed device of office equipment such as printers and copy machines.
プリンター、コピー機等の事務用機器の紙送り装置に使
用される紙送りローラーとして、第３図に示すように、
シャフト等のシャフト（１）にゴム層（２）を被覆させ
たものがある。従来のこの種の紙送りローラーは、シャ
フト（１）に接着材を塗布し、このシャフト（１）をゴ
ム材料とともに金型内にセントした後、該金型内でゴム
材料を加硫させてシャフト（１）の周面上に接着材を介
してゴム層（２）を接着被覆し、その後、ゴム層（２）
を外径研磨するという工程で製造されている。As shown in Fig. 3, paper feed rollers are used in paper feed devices of office equipment such as printers and copiers.
Some types of shafts have a shaft (1) coated with a rubber layer (2). Conventional paper feed rollers of this type are manufactured by applying an adhesive to the shaft (1), inserting the shaft (1) together with a rubber material into a mold, and then vulcanizing the rubber material within the mold. A rubber layer (2) is adhesively coated on the circumferential surface of the shaft (1) via an adhesive, and then the rubber layer (2)
It is manufactured using a process of polishing the outside diameter.
ところで、上記従来の紙送りローラーの製造方法では、
シャフト（１）にゴム層（２）を接着剤で接着して被覆
するため、接着剤塗布によって工程や材料費の増加によ
るコストアップ及び接着剤に含まれる人体に有害な成分
による作業環境の悪化が避けられない。また、金型では
同時に大量に成型することができないため、生産能力が
低く、しかも、紙送りローラーのサイズに応じて各種の
金型が必要である。また、金型精度が良くないと、ゴム
Ｆｉｉ （２）に偏肉が生じるため、ゴム層（２が薄い
場合には、ゴム層（２）の偏肉によりシャフト（１）が
露出して成型が難しく、不良率が高いという欠点があっ
た。そこで、金型精度に問題がある場合は、ゴムＪｉ
（２）の肉厚を余分に形成して外径研磨により精度を確
保しているが、研摩代が多くて研磨加工に時間を要する
とともに、材料ロスが多いという欠点があった。By the way, in the above-mentioned conventional paper feed roller manufacturing method,
Since the rubber layer (2) is bonded and coated onto the shaft (1) with adhesive, the application of adhesive increases costs due to increased process and material costs, and the work environment deteriorates due to components harmful to the human body contained in the adhesive. is unavoidable. Furthermore, since a large amount of paper cannot be molded at the same time using a mold, production capacity is low, and various molds are required depending on the size of the paper feed roller. In addition, if the mold precision is not good, uneven thickness will occur in the rubber Fii (2), so if the rubber layer (2) is thin, the shaft (1) will be exposed due to the uneven thickness of the rubber layer (2) and molded. However, if there is a problem with the precision of the mold, it is difficult to
(2) Excessive wall thickness is formed and accuracy is ensured by polishing the outer diameter, but there is a drawback that the polishing process requires a lot of time and there is a lot of material loss.
本発明は、従来技術の上記問題点に鑑みて開発されたも
ので、その目的とするところは、工程の簡略化及びコス
トの低減化を図るため、接着剤や金型を使用しない紙送
りローラーの製造方法を折倒することにある。The present invention was developed in view of the above-mentioned problems of the prior art, and its purpose is to simplify the process and reduce costs by using a paper feed roller that does not use adhesive or molds. The goal is to change the manufacturing method.
ε課題を解決するための手段〕
本発明は、上記目的を達成するため、シャフトにゴム層
を被覆した紙送りローラーの製造方法であって、シャフ
トに内径がシャフトの外径より小径の形状を記憶した内
径がシャフトの外径より大径のゴム類を素材としだ熱収
縮チューブを必要とする長さ寸法に切断して遊嵌し、こ
の熱収縮チューブを加熱して収縮させ、シャフトに上記
熱収縮チューブを密着させてゴム層を被覆したものであ
る。Means for Solving the ε Problem] In order to achieve the above object, the present invention provides a method for manufacturing a paper feed roller in which the shaft is coated with a rubber layer, the shaft having an inner diameter smaller than the outer diameter of the shaft. A heat-shrinkable tube made of rubber whose memorized inner diameter is larger than the outer diameter of the shaft is cut to the required length and fitted loosely, and the heat-shrinkable tube is heated to shrink, and the above-mentioned shape is attached to the shaft. A rubber layer is covered with a heat-shrinkable tube.
上記のように、シャフトに熱収縮チューブを遊嵌してこ
の熱収縮チューブを熱収縮させ、シャフトに熱収縮チュ
ーブを密着させてゴム層をシャフトに被覆するようにし
たかち、接着剤や金型を使用せずに、シャフトにゴム層
を被覆した紙送りローラーを製造し得る。As described above, a heat shrink tube is loosely fitted onto the shaft, the heat shrink tube is heat shrinked, the heat shrink tube is tightly attached to the shaft, and a rubber layer is coated on the shaft. It is possible to manufacture a paper feed roller whose shaft is coated with a rubber layer without using a rubber layer.
本発明に係る紙送りローラーの製造方法を第１図及び第
２図に基づいて説明する。A method of manufacturing a paper feed roller according to the present invention will be explained based on FIGS. 1 and 2.
第１図及び第２図において、（１１）は金属シャフト等
のシャフト、（１２）は熱収縮チューブ、（１３）は熱
収縮チューブ（１２）を熱収縮させてシャフト（１１）
に密着させ、シャフト（１１）を被覆したゴム層である
。In Figures 1 and 2, (11) is a shaft such as a metal shaft, (12) is a heat shrink tube, and (13) is a shaft (11) made by heat shrinking the heat shrink tube (12).
This is a rubber layer that is brought into close contact with the shaft (11) and covers the shaft (11).
上記熱収縮チューブ（１２）は、シリコン、ＮＲｌＥＰ
ＤＭ、その他ゴム類を、シャフト（１１）の外径よりも
若干小径の内径を有するチューブ状に押出し、これを電
子線照射や加硫釜で半加硫した後、再加熱して膨張（寸
法拡大）させ、この状態で惣冷して膨張した形状を固定
させ、後に熱を加えると収縮して押出し時の寸法に戻る
性質を有するゴムチューブのことである。The heat shrink tube (12) is made of silicone, NRlEP
DM and other rubbers are extruded into a tube shape with an inner diameter slightly smaller than the outer diameter of the shaft (11), semi-vulcanized by electron beam irradiation or in a vulcanization pot, and then reheated to expand (size A rubber tube that has the property of being expanded (expanded), cooled in this state to fix the expanded shape, and then contracted and returned to its extruded size when heated.
本発明の方法では、先ず、第１図に示すように、シャツ
） （１１）に必要とする長さ寸法に切断した熱収縮チ
ューブ（１２）を遊嵌する。次に、シャフト（１１）及
び熱収縮チューブ（１２）を１００〜２００の高温槽内
で数分間放置して熱収縮チューブ（１２）を完全加硫す
るとともに収縮させる。そうすると、第２図に示すよう
に、シャツ） （１１）に熱収縮チューブ（１２）が熱
収縮してシャフト（１１）に密着し、ゴム層（１３）が
シャフト（１１）を被覆する。その後、ゴム層（１３）
の両端を必要長さに長さ切りし、必要であればゴム層（
１３）を外径研磨して紙送りローラーが完成する。In the method of the present invention, first, as shown in FIG. 1, a heat shrink tube (12) cut to the required length is loosely fitted into the shirt (11). Next, the shaft (11) and the heat-shrinkable tube (12) are left in a 100-200°C high-temperature bath for several minutes to completely cure and shrink the heat-shrinkable tube (12). Then, as shown in FIG. 2, the heat-shrink tube (12) is heat-shrinked to the shirt (11) and tightly adheres to the shaft (11), and the rubber layer (13) covers the shaft (11). After that, the rubber layer (13)
Cut both ends to the required length, and if necessary, add a rubber layer (
13) is polished to complete the paper feed roller.
本発明方法によれば、シャツ） （１１）に熱収縮チュ
ーブ（１２）を遊嵌してこの熱収縮チューブ℃
（１２）を熱収縮させ、シャツ） （１１）に熱収縮チ
ューブ（１２）を密着させてゴム層（１３）をシャフト
（１１）に被覆するようにしたから、従来のように接着
剤や金型を使用せずとも紙送りローラーを製造し得る。According to the method of the present invention, the heat shrink tube (12) is loosely fitted into the shirt (11), the heat shrink tube (12) is heat-shrinked, and the heat shrink tube (12) is attached to the shirt (11). Since the shaft (11) is coated with the rubber layer (13) in close contact with the rubber layer (13), the paper feed roller can be manufactured without using adhesives or molds as in the past.
本発明は以上説明したように、接着剤や金型を使用せず
ともシャフトにゴム層を被覆した紙送りローラーを製造
し得る。これにより、接着剤塗布を省略できるから工程
の簡略化及びコストの低減化が図れるとともに作業環境
の悪化が避けられる、また、金型で成型する場合と違っ
て、高温槽で同時に大量に処理が短時間でできるため、
生産能力を大幅にアップさせることができる。また、熱
収縮チューブの押出し時に既にゴム層の外径や肉厚の寸
法が決まっているため、ラフな精度の製品ではゴム層の
外径研磨の必要がなく、高精度を要求される製品でゴム
層の研磨が必要とする場合でも、熱収縮チューブの押出
し時に研摩代が少なくなるようにしておけば、小量の研
磨で良（、研磨加工時間の減少及び材料ロスの削減が可
能である。As explained above, the present invention makes it possible to manufacture a paper feed roller whose shaft is coated with a rubber layer without using an adhesive or a mold. This makes it possible to omit the need for adhesive application, which simplifies the process and reduces costs, while also avoiding deterioration of the work environment.Also, unlike molding with molds, large quantities can be processed simultaneously in a high-temperature bath. Because it can be done in a short time,
Production capacity can be significantly increased. In addition, since the outer diameter and wall thickness of the rubber layer are already determined when extruding the heat shrink tube, there is no need to polish the outer diameter of the rubber layer for products with rough precision, and for products that require high precision. Even if it is necessary to polish the rubber layer, as long as the amount of polishing is minimized when extruding the heat-shrinkable tube, a small amount of polishing is sufficient (it is possible to reduce polishing processing time and material loss). .
第１図及び第２図は本発明に係る紙送りローラーの製造
方法を説明するためのもので、第１図は熱収縮チューブ
が熱収縮する前の斜視図、第２図は熱収縮チューブが熱
収縮した後の斜視図である、第３図は紙送りローラーの
斜視図である。
（１１） −シャフト、
（１２） −熱収縮チューブ、
（１３）・−ゴム層。
特 許 出 願 人 住友ゴム工業株式会社代
理 人 江 原 省 吾
〃 平 池 成 −第
図Figures 1 and 2 are for explaining the method of manufacturing a paper feed roller according to the present invention. Figure 1 is a perspective view of the heat-shrinkable tube before it is heat-shrinked, and Figure 2 is a perspective view of the heat-shrinkable tube before it is heat-shrinked. FIG. 3 is a perspective view of the paper feed roller after heat shrinking. (11) - Shaft, (12) - Heat shrinkable tube, (13) - Rubber layer. Patent applicant: Sumitomo Rubber Industries, Ltd.
Rihito Gangwon Shogo Hiraike Sei - Figure
Claims (1)
造方法であって、 シャフトに内径がシャフトの外径より小径の形状を記憶
した内径がシャフトの外径より大径のゴム類を素材とし
た熱収縮チューブを必要とする長さ寸法に切断して遊嵌
し、この熱収縮チューブを加熱して収縮させ、シャフト
に上記熱収縮チューブを密着させてゴム層を被覆したこ
とを特徴とする紙送りローラーの製造方法。(1) A method for manufacturing a paper feed roller whose shaft is coated with a rubber layer, in which the shaft is made of rubber whose inner diameter is larger than the outer diameter of the shaft and whose inner diameter is smaller than the outer diameter of the shaft. The heat-shrinkable tube is cut to a required length and fitted loosely, the heat-shrinkable tube is heated and shrunk, and the shaft is brought into close contact with the heat-shrinkable tube and covered with a rubber layer. How to manufacture paper feed rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2192232A JPH0480155A (en) | 1990-07-19 | 1990-07-19 | Manufacture of sheet feed roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2192232A JPH0480155A (en) | 1990-07-19 | 1990-07-19 | Manufacture of sheet feed roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0480155A true JPH0480155A (en) | 1992-03-13 |
Family
ID=16287857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2192232A Pending JPH0480155A (en) | 1990-07-19 | 1990-07-19 | Manufacture of sheet feed roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0480155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008024467A (en) * | 2006-07-24 | 2008-02-07 | Miyako Roller Industry Co | Carrying/guide roll |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047761B2 (en) * | 1978-05-09 | 1985-10-23 | 日本電気株式会社 | airtight high frequency window |
| JPS622283A (en) * | 1985-06-28 | 1987-01-08 | Canon Inc | Elastic rotating body and fixing device |
| JPS63300041A (en) * | 1987-05-30 | 1988-12-07 | Tokai Rubber Ind Ltd | Rubber roller and its manufacture |
-
1990
- 1990-07-19 JP JP2192232A patent/JPH0480155A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047761B2 (en) * | 1978-05-09 | 1985-10-23 | 日本電気株式会社 | airtight high frequency window |
| JPS622283A (en) * | 1985-06-28 | 1987-01-08 | Canon Inc | Elastic rotating body and fixing device |
| JPS63300041A (en) * | 1987-05-30 | 1988-12-07 | Tokai Rubber Ind Ltd | Rubber roller and its manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008024467A (en) * | 2006-07-24 | 2008-02-07 | Miyako Roller Industry Co | Carrying/guide roll |
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